LCD Heating Layer for Low-Temperature Operation
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Solution Overview
Problem
Liquid crystal displays face issues with increased viscosity, higher threshold voltage, and slower response speed in low-temperature environments, leading to dynamic dragging or failure of the display screen.
Innovation Solution
A liquid crystal display panel design featuring a heating layer on the array substrate corresponding to the white color resistance, along with first and second heating traces parallel to the gate and data lines, respectively, to maintain a uniform and rapid heating of the liquid crystal layer, ensuring normal operation in low-temperature conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If liquid crystal displays operate in low-temperature environments, then the display can function in cold conditions, but the viscosity coefficient of liquid crystals increases, threshold voltage rises, and response speed decreases causing dynamic dragging
Solution Approach 1:
The patent introduces a heating layer that changes the temperature parameter of the liquid crystal layer, transforming it from a low-temperature state (causing high viscosity and slow response) to an optimal operating temperature range, thereby resolving the performance degradation in cold environments
Solution Approach 2:
The heating layer is activated before or during the display operation in low-temperature environments to preheat the liquid crystal layer, ensuring that the liquid crystals reach their optimal operating temperature before displaying images, thus preventing dynamic dragging and performance issues
2Productivity
If a heating layer is added to the array substrate, then uniform and rapid heating of the liquid crystal layer is achieved, but the device complexity increases
Solution Approach 1:
The heating layer is integrated into the array substrate structure, allowing the same component to serve both as part of the substrate architecture and as a heating element. This multi-functionality approach adds heating capability without proportionally increasing overall device complexity
Solution Approach 2:
The heating traces are merged with the existing gate lines and data lines structure, using the same conductive material and fabrication processes. This integration combines the heating function with the existing electrical routing, minimizing additional structural complexity while achieving uniform heating coverage
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables quick startup and normal operation of liquid crystal displays in low-temperature environments by providing uniform and rapid heating of the liquid crystal layer, preventing dynamic dragging and abnormal displays.
Implementation Method 1
the fourth sub-pixel area is provided with a heating layer configured to heat the liquid crystal layer
Data Source
AI summary
A liquid crystal display panel is provided, which includes a color filter substrate including an array of red, green, blue, and white color resistances. An array substrate disposed opposite to the color film substrate. The array substrate includes a plurality of data lines and a plurality of gate lines vertically arranged, the data lines and the gate lines divide the array substrate into a plurality of sub-pixel areas. A liquid crystal layer disposed between the array substrate and the color filter substrate. The white sub-pixel area is provided with a heating layer for heating the liquid crystal layer, which solves the problem that the liquid crystal display panel exhibits undesirable phenomena such as smear due to abnormal liquid crystal state when operating in a low-temperature environment.